Innate sleep rhythms.
D002986:Clinical Trials as Topic; D004569:Electroencephalography; D005133:Eye Movements; D005260:Female; D006339:Heart Rate; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D008297:Male; D010507:Periodicity; D011187:Posture; D011674:Pulse; D012129:Respiratory Function Tests; D012890:Sleep